Loose reed for looms



April 24, 1934. v. LINDsJo LOOSE REED FOR LOOMS Filed June 16, 1933 2 Sheets-Sheet l INVENTOR,

Vf/ewE/' L most/o.

[AUT/V555.

CLM/TON Oi Couew.

ATTORNEY.

April 24, 1934.

v. I INDsJo 1,956,075

LoosE REED FOR LooMs Filed June 16, 1933 2 Sheets-Sheet 2 f lO 36 a n E ,5 f 27 -fila i 20T 3E f V Z8 O/ F 01:; o Q e I8 Z9 v/ 2E, OO 1 33 5o 4: as O Z3 1 as 34 MUT/V55 5.

CL //v TON 5. COBUE/y.

INVENTOR.

V55/v5@ nx/05a@ ATTORNEY.

Aatented Apr. 24, 1934 LOOSE REED FOR LOOMS Verner Lindsjo, Hcpedale, Mass., assigner to Draper Corporation, Hopedale, Mass., a corporation of Maine Application June 16, 1933, Serial No. 676,147

12 Claims.

The present invention relates to ily shuttle looms and has more particular reference to a reed controlling mechanism for a loose reed mounted on the lay of such looms.

5 The conventional mechanism for controlling the loose reed of a loom usually provides for holding the reed more or less firmly at the time the lling is beaten in and while the shuttle is in iiight while still permitting the reed to yield l rearwardly if the shuttle fails to complete its flight and becomes trapped in the shed.

It is particularly desirable that, while the shuttle is in flight, the reed be positively locked, in order that it may accurately guide the shuttle,

l and means for this purpose have heretofore been devised. However, such means, of which I am aware, have been so constructed that when the reed is moved rearwardly, as by a trapped shuttle, the locking means interferes with restoration ci the reed to operative position until the lay is manipulated backwardly or forwardly to a predetermined point. This manipulation of the lay involves not only inconvenience but also an appreciable loss of time and increased expenditure of energy on the part of the weaver, particularly if the loom is heavy, and diicult to turn over by hand.

My invention provides a means for locking the reed during the time the shuttle is in iiight, which includes a stop that is capable of yielding rearwardly and accordingly does not interfere with the return of the reed to operative position regardless of the position of the lay.

A further object of my invention is to provide a novel and improved means for controlling the reed during that interval when it is capable of yielding if the shuttle is trapped, which means is so constructed as to yieldingly hold a reed locking bar in either locking or unlocking 40 position.

For detailed disclosure of the preferred embodiment of my invention, reference may be had to the accompanying drawings, of which:

Fig. 1 is a perspective view of the lay, reed and reed controlling mechanism constituting the said preferred embodiment of my invention, certain of the parts in this View being broken away and appearing in section;

Fig. 2 is a sectional elevation of the mechanism shown in Fig. 1, illustrating the manner of operation when the shuttle is trapped; and

Fig. 3 is a view similar to Fig. 2 but illustrating the manner of operation when the shuttle is not trapped. Y

The various component mechanisms of the loom to which my invention has been applied are supported by the usual loom sides, illustrated fragmentarily at l, most of such mechanisms being not herein illustrated or described as they are old and well known in the art and form no part of the present invention, I have, however, shown the lay 2 and its lay swords 3, 3 by means of which it is mounted for reciprocation toward and from the front of the loom, which is toward the right in Figs. 2 and 3. The lay 65 assembly includes a race plate i along which the fly shuttle 5 runs, shuttle boxes, as 6, and a reed cap 7 carried by the swords, the entire assembly being reciprocated in the usual manner by pitmen one of which is illustrated at 8.

The loom employs the so-called loose reed for beating the filling and guiding the shuttle in its night. In other words, the reed 9 is mounted on the lay for rearward movement relative thereto but is held against such movement by means hereinafter described, during certain parts of the cycle of movement of the lay. To this end, the reed 9 is pivotally mounted in a groove l0 in the reed cap 7, so that the lower edge or rib 11 of the reed can swing forwardly and rear- 80 wardly.

The reed may be held in place against a shoulder 12 on the lay by suitable means such as a locking bar 13 supported by a shaft 14, through the medium of arms 15, the latter being xed to the shaft. This shaft extends longitudinally of the lay therebeneath and is oscillatable between reed locking position (Figs. l and 3), wherein the locking bar 13 bears against the rib 11 of the reed, and unlocking position (Fig. 2) wherein the 90 locking bar is swung rearwardly free of the reed rib.

The locking bar and shaft normally occupy the position shown in Figs. i and 3, and in order to iirmly hold these parts against movement while the filling is being beaten in an arm 16 may be Xed to the shaft lli in position to project forwardly beneath a fixed stop 17 as the lay approaches the end of its forward movement.

My invention provides a novel means for positively locking the shaft 14 (or a corresponding element in other constructions) against movement to hold the reed in'place during the time the shuttle is normally in flight. The particular form of such means illustrated is comprised of a locking arm 18 projecting rearwardly from the shaft 14 in a direction opposite to one of the arms 16, and a rearwardly yieldable stop 19.

The arm 18 extends substantially horizontally when the lay is at or near front center, and the stop 19 is positioned so that a step 20 in the upper end thereof engages the free end of the arm when the lay is at that predetermined point in its rearward movement where the shuttle is picked. The stop 19 is herein constituted by an upstanding lever pivoted at its lower end to a bracket 21 on the right hand lay sword 3. A bracket 22 fixed to the loom side carries a pin 23 which extends forwardly through a slot 24 (Fig. 1) in the lever. A coil spring 25 encircles the pin and bears between the bracket and the lever for yieldingly urging the latt-er forwardly. Forward movement of the stop lever is limited by means of a lug 26 which is formed integrally with the bracket 22.

Movement of the lay rearwardly of the point where arm 18 rst engages the step 20 serves to force the latter rearwardly against the action of the spring 25, but while such parts are engaged the reed is firmly locked in position.

Both of the locking means above described release the shaft 14, and the reed, so that at a predetermined point in the forward movement of the lay the reed may yield rearwardly if, as illustrated in Fig. 2, the shuttle becomes trapped in the shed. In such an event, a dagger 27 on shaft 14 is raised into the path of a lug 28 on rod 29, to thereby slide the latter forwardly and, through the medium of a link 30, move the shipped handle 31 from the on position of Fig. 3 to the oir position of Fig. 2, thereby stopping the loom. These loom stopping instrumentalities are not of the present invention, being disclosed in prior Patent No. 1,850,306, granted March 22, 1932.

When the loom is stopped in the manner aforesaid the shuttle is tightly held in the warp sheet and the lay is well forward. Consequently, in order to release the shuttle, to prepare the loom for running, it is necessary to move the lay rearwardly. With prior constructions, still further manipulations of the lay were necessary before the reed and reed locking means could be restored to normal operative positions. However, with the present construction, when the lay is moved rearwardly the arm i8 engages the stop 19 below the step 20 and pushes the stop rearwardly. Then, the locking bar 13 may be returned to normal position, whereupon the arm 18 automatically reengages the step 20, and no further manipulation of the lay is necessary before restarting the loom.

It is necessary that means be provided for controlling the reed during that portion of the cycle of movement of the lay when the reed is capable of yielding rearwardly. That is, at the time mentioned, a very light spring pressure should be exerted on the reed and locking parts to prevent their chattering or swinging idly. My invention provides a novel form of such means which also serves to hold the locking parts in unlocked position when moved thereto.

Accordingly, the shaft 14 has fixed thereto an upstanding arm 32 to the upper end of which is pivoted a link 33. The link 33 is curved, to clear the shaft 14. A tension spring 34 has its upper end hooked onto the lower end of the link and its lower end attached to a stand 35 carried by the left hand lay sword 3.

When the shaft 14 is in reed locking position, Figs. 1 and 3, the line of action of the spring 34, which .passes through the pivotal connection between the link 33 and arm 32, is on the front side of the axis of the shaft 14, as clearly shown in Fig. 3. Consequently, the tension of the spring tends to rotate the shaft clockwise and thus hold the locking bar 13 in contact with the reed rib.

The leverage on which the spring acts is very small and the resultant force transmitted to the locking bar is just sufcient to prevent the parts from swinging loosely about, while presenting an almost negligible resistance to rearward movement of the reed when the latter contacts a trapped shuttle.

The rearward movement of the reed, to the position shown in Fig. 2 serves to move the line of action of the spring 34 to the rear of the shaft 14 and the spring then acts to yieldingly hold the shaft and locking bar in unlocking position. After the trapped shuttle has been removed from the shed the reed will swing forwardly to its normal position and the locking parts may be returned to their normal positions by means of a finger piece 36 which is pivotally connected to the dagger 27.

Having fully described the preferred embodiment of my invention, I claim:

1. In a ily shuttle loom, the combination of the backwardly and forwardly reciprocating lay and the shuttle, with a reed mounted on the lay for rearward movement thereon, means for holding the reed against such movement while the filling is being beaten in, and means including a rearwardly movable stop for positively locking the reed against such movement during that portion of the cycle of movement of the lay when the shuttle is normally in flight, the reed being free from the action of both said means at a predetermined point in each forward movement of the lay.

2. 1n a fly shuttle loom, the combination of the backwardly and forwardly reciprocating lay and the shuttle, with a reed mounted on the lay for rearward movement thereon, means for positively locking the reed against such movement while the filling is being beaten in, and means in addition to said first named means, and including a rearwardly yieldable stop for positively locking the reed against rearward movement during that portion of the cycle of movement of the lay when the shuttle is normally in flight, both said means being positioned to be free of control of the reed at a predetermined point in each forward movement of the lay.

3. In a ily shuttle loom, the combination of the backwardly and forwardly reciprocating lay and the shuttle, with a reed mounted on the lay for rearward movement thereon, a shaft extending lengthwise of the lay, a locking bar supported by said shaft and adapted to lock the reed against rearward movement, oppositely projecting arms carried by said shaft, and separate stops engaging different of said arms to thereby lock the reed against movement during that portion of the cycle of movement of the lay when the shuttle is normally in flight and also while the filling is being beaten in, said stops being positioned to be free of said arms at a predetermined point in each forward movement of the lay.

4. In a fly shuttle loom, the combination of the backwardly and forwardly reciprocating lay and the shuttle, with a reed mounted on the lay for rearward movement thereon, a shaft extending lengthwise of the lay, a locking bar supported by said shaft and adapted to lock the reed against rearward movement, a rearwardly projecting arm on said shaft, a rearwardly yieldable stop positioned to engage said arm, and thereby positively lock the reed, at a predetermined point in each rearward movement of the lay, and means for limiting the forward movement of said stop.

5. In a fly shuttle loom, the combination of the ics backwardly and forwardly reciprocating lay with a reed mounted on the lay for rearward movement thereon, and means for positively locking the reed against such movement while the shuttle is in flight; said means including a locking arm moving with the lay, a rearwardly yieldable stop positioned to engage said arm at a predetermined point in each rearward movement of the lay, and means for limiting the forward movement of said stop.

G. In a fly shuttle loom, the combination of the backwardly and forwardly reciprocating lay with a reed mounted on the lay for rearward movement thereon, and means for positively locking the reed against such movement while the shuttle is in fiight; said means including a shaft extending longitudinally of the lay, a locking bar carried by said shaft, a locking arm fixed to said shaft and projecting approximately horizontally therefrom, a rearwardly yieldable stop positioned to engage said arm at a predetermined point in each rearward movement of the lay, and means for limiting the forward movement of said stop.

'7. In a fly shuttle loom, the combination of the backwardly and forwardly reciprocating lay With a reed mounted on the lay for rearward movement thereon, means for positively locking the reed against such movement while the shuttle is in iiight said means including a shaft extending longitudinally of the lay, a locking bar carried by said shaft, a locking arm fixed to said shaft and projecting rearwardly therefrom, a pivoted lever having a stepped portion engageable beneath the free end of said arm at a predetermined point in each rearward'mc-vement of the lay, yieldable means for urging said lever forwardly about its pivot, and means for limiting the forward movement of said lever.

8. In a ny shuttle loom, the combination of the backwardly and forwardly reciprocating lay with a reed mounted on the lay for rearward movement thereon, an oscillatable shaft extending lengthwise of the lay, a reed locking bar supported by said shaft, means for holding said shaft from turning while the filling is being beaten in, a second means independent of said rst named means for holding said shaft from turning while the shuttle is in iiight, and spring means acting on said shaft to yieldingly hold it in either of two oscillatory positions.

9. In a loom, the combination of the lay with a loose reed mounted thereon, locking means for said reed including a shaft extending longitudinally of the lay and a locking member carried by said shaft, the said shaft being oscillatable between locking and unlocking positions, and a spring connected to yieldingly hold said shaft in either position.

it. In a loom, the combination of the lay with a loose reed mounted thereon, locking means for said reed including a shaft extending longitudinally of the lay and a locking member carried by said shaft, the said shaft being oscillatable between locking and unlocking positions, and a spring connected so that its line of action moves to opposite sides of the axis of said shaft as the latter moves from one of the said positions to the other, whereby the said spring yieldingly holds said shaft in either of said positions.

1l. In a loom, the combination of the lay with a loose reed mounted thereon, locking means for said reed including a shaft extending longitudinally of the lay and a locking member carried by said shaft, the said shaft being oscillatable between locking and unlocking positions, an arm xed to said shaft, a link pivoted to said arm, and a spring acting on said link, the line of action of said spring being on one side of the axis of said shaft when the latter is in locking position and moving to the other side thereof when the shaft is moved to unlocking position, whereby the said spring yieldingly holds the said shaft in either of the said positions.

l2. In a loom, the combination of the lay and its lay swords with a loose reed mounted thereon, locking means for said reed including a shaft oscillatable between reed locking and unlocking positions, an arm iixed to said shaft, a link pivoted to said arm, and a tension spring acting on said link the line of action of said spring moving from one side of the axis of said shaft to the other side thereof as the shaft moves from one to the other of said positions.

VERNER LINDSJO. 

